Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 9-10
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 79-86
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 92-110
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 111
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 121-122
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 126-148
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 149
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 151-159
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 160
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 162
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 163-175
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 176
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 416-422
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 429
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 435-439
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 443
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 448-453
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 460-463
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 472-485
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Published in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1881, in volume 33, pages 502-505
Created: 2013-03-02, modified: 2013-03-02